Manufacturing method of sliding unit of sliding rail and structure thereof

ABSTRACT

A manufacturing method and structure of hidden slide&#39;s slide unit, which the slide unit sets between upper and lower rail bars. The slide unit is made by long-plate-shaped substrate, which has the following steps: preliminary forming, pressure bending and rolling forming. First, preliminary forming and pressure bending can make substrate a prototype, then rolling forming can make substrate become a slide unit and the slide unit can be squeezed and concentrated. Therefore, the density of the slide unit structure is increased to enhance the strength of structure, which can avoid the slide be deformed, insure the operation quality of hidden slide can slide out smoothly, increase service life, decrease manufacturing cost, and have better economic benefit.

FIELD OF THE INVENTION

The present invention is manufacturing method and structure of a slide unit of a hidden rail, more especially to a manufacturing method and structure of the slide unit with high structural strength and stability.

BACKGROUND OF THE INVENTION

Manufacturing method and structure of hidden slide's slide unit, referring to FIG. 6, wherein a slide unit 30 is bent by machining, wherein the upper and lower slide units form slide portion 31 and a support portion 32 is therebetween. Meanwhile, a panel leans on support portion 32 but only outside of support portion 32, so the middle part of support portion 32 does not have enough support. Besides, two slide portions only lean on outside of support portion 32, which makes slide portion 31 thicker and the support portion 32 even weaker. More seriously, the drawer may be deformed and cracked easily when loading weight, and the whole structure's stability is further reduced.

Referring to FIG. 7, there is another slide unit structure in the market. A slide unit 40 is integrally molded by pulling and casting, and has two support portions 41 and support portion 42. The slide unit 40 has a stronger structure but the material and processing cost is high, which adversely affects the sales. Therefore, there remains a need for a new and improved slide unit structure to overcome the problems stated above.

SUMMARY OF THE PRESENT INVENTION

To solve the problem stated above, the present invention provides a manufacturing method and structure of a slide unit of a hidden rail, wherein the slide unit is disposed between upper and lower rail bars. The slide unit is made by long-plate-shaped substrate, which has the following steps: preliminary forming, pressure bending and rolling forming. Wherein, preliminary forming make upper and lower substrate form bent portion, and middle of substrate form support rod, then pressure bending makes upper and lower bent portion bend opposite direction and form S shaped, moreover, it curves and lean on support rod to form closed arc. At last, rolling forming make substrate squeezed and increase the density of bent portion and support rod, it can enhance the strength of the whole slide unit, and make the part between bent portion and support portion smooth, thereby, it can makes two bent portions squeeze and form two slide portions, moreover, the support rod is squeezed and form support portion, then two outside of slide portion form two symmetric outer chutes and two slide portions forms inner chute inside, thereby, it constitutes a manufacturing method and structure of hidden slide's slide unit.

Comparing to previous inventions, the slide unit of the present invention is made by following steps: preliminary forming, pressure bending and rolling forming. First, preliminary forming and pressure bending can make substrate a prototype, then rolling forming can make substrate become a slide unit and the slide unit can be squeezed and concentrated. Therefore, the density of the slide unit structure is increased to enhance the strength of structure, which can avoid the slide unit be deformed, ensure the operation quality of hidden slide that can slide out smoothly, increase service life, decrease manufacturing cost, and have better economic benefit.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 illustrates a block diagram of a manufacturing method of the present invention.

FIG. 2 illustrates a flow diagram of manufacturing method of the present invention.

FIG. 3 illustrates a perspective view of the hidden slide when in use in the present invention.

FIG. 4 illustrates a exploded view of the hidden slide when in use in the present invention.

FIG. 5 illustrates a sectional view of the hidden slide when in use in the present invention.

FIG. 6 illustrates a schematic diagram of the prior art.

FIG. 7 illustrates a schematic diagram of another prior art.

DETAILED DESCRIPTION OF THE INTENTION

The detailed description set forth below is intended as a description of the presently exemplary device provided in accordance with aspects of the present invention and is not intended to represent the only forms in which the present invention may be prepared or utilized. It is to be understood, rather, that the same or equivalent functions and components may be accomplished by different embodiments that are also intended to be encompassed within the spirit and scope of the invention.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood to one of ordinary skill in the art to which this invention belongs. Although any methods, devices and materials similar or equivalent to those described can be used in the practice or testing of the invention, the exemplary methods, devices and materials are now described.

All publications mentioned are incorporated by reference for the purpose of describing and disclosing, for example, the designs and methodologies that are described in the publications that might be used in connection with the presently described invention. The publications listed or discussed above, below and throughout the text are provided solely for their disclosure prior to the filing date of the present application. Nothing herein is to be construed as an admission that the inventors are not entitled to antedate such disclosure by virtue of prior invention.

In order to further understand the goal, characteristic and effect of the present invention, a number of embodiments along with the drawings are illustrated as following. Referring to FIG. 1-2, manufacturing method and structure of hidden slide's slide unit, which the slide unit 20 is made by long-plate-shaped substrate 201, which has the following steps: preliminary forming, pressure bending and rolling forming. Wherein, preliminary forming makes upper and lower substrate 201 form bent portion 202 and middle of substrate form support rod 203. Second, pressure bending makes upper and lower bent portions 203 bend opposite direction and form S shaped, moreover, it curves and lean on support rod to form closed arc. At last, rolling forming make substrate 201 squeezed and increase the density of bent portion 202 and support rod 203, it can enhance the strength of the whole slide unit 20, and make the part between bent portion 202 and support portion 203 smooth, thereby, it can makes two bent portions 202 squeeze and form two slide portions 21, moreover, the support rod 203 is squeezed and form support portion 22, then two outside of slide portion 21 form two symmetric outer chutes 211 and two slide portions 21 forms inner chute 212 inside, thereby, the slide unit is integrally molded, and correspond to upper rail bar 11 and lower rail bar 12 both ends has two large head-shaped slide portion 21, then form a support portion 22 between two slide portions 21, which this two slide portions 21 set symmetrically two outer chutes 211 outside, and inside of two slide portions 21 extends to support portion 22 has inner chute 212 to provide space for ball 23. Moreover, it forms a smooth shape between inner chute 212 and support portion 22.

The structure of the composition of the actual use state, referring to FIGS. 3-5, the slide unit 20 sets between upper rail bar 10 and lower rail bar 11 of hidden slide 10, which the two slide units 20 provide two slide portions 21 some balls 23 at outer chute 211 and inner chute 212. Two slide portions set between upper rail bar 10 and lower rail bar 11 of hidden slide 10, which the upper rail bar 10 and lower rail bar 11 both have fixing channel 111 and 121, and bend inward forming limiting portions 112 and 122 at fixing channel 111 and 121. Thereby, slide unit 20 can set at fixing channel 111 and 121 of upper 11 and lower rail bars 12, meanwhile, limiting the balls 23 at outer chute 211 roll inside fixing channel 111, 121, and the balls 23 at inner chute 212 will be covered by limiting portion 111, 122 of fixing channel 111,121, which the balls 23 can also roll. Utilizing slide unit 20 and ball 23 roll in upper 11 and lower rail bar 12, can make the slide pulling smoother. According to above-mentioned, it can compose a hidden slide structure.

The present invention is advantageous because the slide unit 20 is made by substrate 201, which has the following steps: preliminary forming, pressure bending and rolling forming. First, preliminary forming and pressure bending can make substrate 201 a prototype, then rolling forming can make substrate 201 become a slide unit 20 and the slide unit 20 can be squeezed and concentrated. Therefore, the density of the slide unit structure is increased to enhance the strength of structure, which can avoid the slide unit 20 be deformed, insure the operation quality of hidden slide 10 can slide out smoothly, increase service life, decrease manufacturing cost, and have better economic benefit.

Having described the invention by the description and illustrations above, it should be understood that these are exemplary of the invention and are not to be considered as limiting. Accordingly, the invention is not to be considered as limited by the foregoing description, but includes any equivalents. 

What claimed is:
 1. A method of manufacturing a slide unit of a hidden rail comprising steps of: (i) preliminary forming, (ii) pressure bending and (iii) rolling forming, wherein the step of preliminary forming includes steps of bending an upper end and lower end of a substrate to form a bent portion, and forming a supporting portion in a middle portion of the substrate, wherein the step of pressure bending includes steps of shaping the bent portion to a reverse S shape, and forming the bent portion a closed arc closely attaching to the supporting portion, wherein the step of rolling forming includes a step of squeezing the substrate to increase the density of bent portion and supporting portion to further enhance the strength of the slide unit, wherein the two bent portions are squeezed to two sliding portions, and two outside portions of the sliding portions form two symmetric outer chutes, and two inner portions of the sliding portions form two inner chutes.
 2. A method of manufacturing a slide unit of a hidden rail of claim 1, wherein the slide unit is disposed between an upper and a lower rail bar, and the slide unit is integrally molded, and the slide unit has two sliding parts corresponding to the upper rail bar and lower rail bar, wherein a support part is formed between two slide parts, and two outer grooves are recessedly and symmetrically formed outside the slide parts, and two inner grooves inside the slide parts extending towards the supporting part.
 3. A method of manufacturing a slide unit of a hidden rail of claim 1, wherein, both the upper rail bar and lower rail bar have a channel, and one side of which bends inward to form a restricting portion. 